Last year gave the world much to protest. Political instability and social injustice led to millions taking to the streets in 2017 and even more to social media to make their voices heard. But as the masses rebel, the authorities clamp down – leading to new and inventive ways of showing discontent. So how has protest changed over the years and where is it heading? Andrew Mueller is joined by Rachael Jolley, Stefan Dickers and Dr Fern Riddell.